Corrugator



8, 1931. K. SIEG CORRUGATOR F1166 Aug. 21, 1930 2 Sheets-Sheet 1 [III/Il INVENTOR Karl Sa'ey BY (2 ,,;,.,./M PM 7 ATTORNEYS Dec. 8, 1931. c; 1,835,816

CORRUGATOR Filed Aug. 21 1930 2 Sheets-Sheet 2 INVENTOR I Karl ,d'dqy BY ATTQRN EYfi a me Patented Dec. 8, 1931 UNITED STATES PATENT OFFICE N KARL SIEG, OF BROOKLAWN, NEW JERSEY, ASSIGNOR TO SAMUEL M. LANG STON CO1!- PANY, OF CAMDEN, NEW JERSEY, A COBI'ORA'I'ION OF'NE'W' JERSEY CORRUGATOR In the manufacture of single faced corrugated paper itis customary to provide a pair of corrugating intermeshing rolls for corrugating one sheet and a smooth roll closely ad- 5 jacent to them for pressing a liner or facing sheet against the crowns of the corrugations of the corrugated sheet. The axes of the three rolls may lie in approximately the. same plane so that the corrugated sheet travels approximately along one-half the circumference of the middle roll. The corrugated sheet is held in registry with the corrugations of the middle roll, while traveling through its approximately half periphery from the line of intermeshing of the corrugating rolls to the line of approximate tangency of the middle roll and thesmooth roll. For holding the sheet in registry, but at the same time permitting slight outward utting movement, it is customary to provide a series of curved guide strips or shields so designed and mounted that they permit of the application of the silicate of soda or other adhesive to the crowns of the corrugations during the travel to the line of application of the liner. An apparatus of this character is shown in the Langston Patent 1,642,782, dated Sept. 20, 1927.

It is desirable that the guide strips be very terference with the action of the adhesive applying roll, and it is also desirable that they extend substantially the full distance along the periphery of the middle roll from narrow so that there will be the minimum in Application filed August 21, 1930. Serial No. 476,812. 7

tion of other partsof the machine and the fact that itis diflicult if not impossible for i the operator to see in under and partly behind the middle roll.

By the present invention it is sought to so design, assemble and support these guide strips that their accurate positioning in an expeditious manner is insured.

In carrying out the invention a supporting bar is mounted closely adjacent to the first corrugating roll and spaced from the middle roll, and the guide strips or shields on brackets are assembled in definite and predetermined circumferential relationship with re spect to said middle roll. This definite and predetermined relationship is effected by locking the shields to the brackets in selective position on a jig assembly having a wheel coextensive in diameter with the middle roll. The brackets with their associated shields are then secured to the under side of the supporting bar away from the first corrugating roll. Thus when the adhesive applying roll is lowered, the brackets of the guides may be unbolted, dropped down and removed and new ones inserted, lifted into place and bolted on in predetermined and fixed position in respect to the under surface of the bar. The requisite positioning of the guide strips in respect to the corrugating rolls and liner applying roll is thus insured and the removal of one guide strip and the insertion of a new onemay be very easily and quickly accomplished.

The present invention also involves a novel jig whereby the accurate assembling of the guide strip and its bracket may be quickly and easily accomplished.

In the accompanying drawings there is illustrated merely one embodiment of the invention, in which Fig. 1 is a vertical longitudinal section through the center portion of the machine,

Fig. 2 is afront elevation showing details of one of the corrugating rolls with associated guide strips,

Fig. 3 is a top plan View showing details of a supporting arm for the guide strips,

Fig. 4 is a front elevation showing details of a supporting arm for the guide strips,

Fig. 5 is a section taken on line 5-5 of Fig. 3,

Fig. 6 is a perspective showing details of the brackets which support the guide strips,

Fig. 7 is a detail view of a guide strip, and

Fig. 8 shows a jig assembly.

Like reference characters denote like parts in the several figures of the drawings.

In the following description andin the claims, parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit.

The present invention is illustrated as adapted to a machine designed for the manufacture of single faced corrugated paper which may constitute the final product or which may be delivered to another machine to have an additional facing strip adhesively' secured thereto.

Referring particularly to the accompanymg drawmgs there is shown a machine slllmounted on a bedplate 10, and having a suitable frame structure to hold the elements of the machine in operative position. This frame work includes two main end pieces 11 having extending laterally therefrom brackets 12 serving as suppo 'ts for .lllllS 13 piv otally mounted thereon. Journaled in the lower ends of these pivoted arms 13 is a first corrugating roll '14, which is preferably of hollow steel forging made of one piece and having the external surface thereof provided with grooves or ridges 15 adapted to impart corrugation to a sheet 16 as it travels through the field of action thereof. Cooperating with said roll 14 is a middle roll 17 which is similarly provided with surface grooves or ridges and which is disposed in intermeshing -relationship with the roll 14. This roll 17 is also made hollow not only to rcducc the weight, but to permit heating by the delivery of steam through the bearings thereof.

Cooperating with the roll 17 is a smooth surfaced pressure roll 18 which is suitably journaled to the frame work of the ma hine,

and which has cooperating therewith a threading board 20 which aids in threading up the machine. The axes of the three rolls 14, 17 and 18 are mounted approximately in the same plane so that the sheet 16 in its travel through the machine passes over a poition of the periphery of the roll 14. between said roll and the middleroll 17, where a corrugation is imparted to the sheet. and along approximately one-half the circumference of said middle roll. During the travel of the sheet 16 around the periphery of the roll 17, adheslve is applied to the crown of the corrugations on said sheet. The corrugated sheet 16 then passes between the intermeshing portion of said roll 17 and the pressure roll 18, and a facing sheet or liner 21 traveling over an idler 22 comes in co tact with the adhesively applied portion of the sheet 16. The resultant single faced corrugated paper passes over an idler 23 and then to a suitable winding spool or a machine for subsequent operations.

The n'i'ounting of the rolls have not been described with particular detail, inasmuch as it is understood that these rolls are mounted similarly-to the mounting of the Langston Patent 1,642,782.

Adhesive is applied to the crown of the corrugations by a transfer roll 24 which rotates in contact with a pickup roll 25. the lower portionof which dips into a silicate pan 26. This transfer roll 24 may be raised and lowered in response to the rotation of a handwheel 27, and the spacing of the pickup and transfer roll is controlled by eccentric bushings for tl1== shaft of the pickup roll as claimed in my prior Patent 1.186.997.

The silicate pan 26 is supported on toggle links 28 and a cam 30. so that by turning the handwhccl 31 of the shaft 32 by said cam. the par. may be 'loweredout of contact with the pickup roll when the machine is stopped or when it is desired to clean it.

The device by means of which the sheet 16 is held in close relationship with the roll 17 during its travel from the roll 14 to the roll 18, constitutes an important feature of the present invention. This device includes a supporting bar 40 which is mounted on a pair of columns 41 constituting part of theframe work of the machine. This bar 40 has secured to the underside thereof a plurality of brackets 43. each of which is provided with a slot 44 for the passage. therethrough of bolts 45. These bolts 45 have a threaded engagcn'ient with the bars 40 through the agency of the tap holes 46 in said bar and serve to lock the brackets 43 in selective position thereon. Each bracket 43 is provided with a segmental portion 47 having a slot 48 substantially at right angles to the slot 44 for the reception therein of a thin guide strip or shield 50. These guide strips extend approximately along one-half of the periphery of the middle roll 17 and may be disposed in any selective position in the. slots 48, where they are confined by means of setscrews 51. it should be noted that the portion of each guide strip 50 adjacent the transfer roll 24, is sutficiently spaced from the corrugating surface of the roll 17, to permit a certain degree of outward jutting of the sheet 16 so that the transfer roll 24 in applying adhesive to the crown of the corrugated sheet doe not press against the corrugating surface of said roll 17. The jutting portion of the corrugated sheet 16 coming in contact With'each guide strip 50, wears out a portion thereof, so that said strip ceases to become effective after a certain period of operation. For that reason. these strips have to be very frequently replaced. It should be noted that by mounting the brackets 43 beneath the bars 40, a simple means has been provided by means of which these brackets and their attached guide strips 50 may be removed from the field of action of the machine after the transfer roll 24 has been disposed outside of cooperating relationship with the sheet 16 as described in the U. S. Patent 1,186,998.

To obviate the endwise movement of the guide strips 50 in the direction of the rolls, the roll 14 is provided with a plurality of circumferential grooves 50a which receive the ends 507) of said strips. The transfer roll 24 is similarly provided with grooves which receive the intermmliate portion of the strips 50 and which also serve to obviate the endwise movement of said strips.

it should be noted that the grooves 50a not only serve to prevent eudwise movement of the strips 50. but also serve to permit the ends 5.0. of said strips to extend proximate the point of tangent-y of the twp rolls 14 and 17. in this manner-the sheet 16 is guided into registry with the roll 17 almost as soon as moves into the field of action of said roll. To facilitate the entry of the sheet 16 into registered relationship with the roll 17 the end 50]) of each strip is ofi'set as shown in Fig. 7

To remove the guide strips 50 and their associated brackets 43 from the machine, these brackets are unbolted and the guide strips moved directly away from the middle roll 17 and anproximatey at right angles thereto. lt will be noted that the nndersurface of the bar 40 lies in a plane which is substantially radial to the roll 17. so that sliding movement of the bracket 43 is radial to the roll, but the bracket may be moved directly away from the surface of the bar oralong said surface. After these guide strips 50 have been moved a certain distance away from the middle roll 17, they can be dropped and removed from the machine.

In order to provide a simple and efficient means for mounting the guide strips 50 in predetermined relationship with the. roll 17 so as to facilitate their adjustment after they have been mounted on the machine. their associated brackets 43 are set on a jig 51 having a wheel 52 mounted thereon which is co-extensive in diameter with the roll 17. The jig 51 is provided with a supporting surface 53 adapted to have attached thereto the brackets 43. The wheel 52 is provided with a stop pin 54 which determines the extreme position of the ends 505 of the guide strips 50 with respect to the roll 17. These strips are inserted in the slots 44 of the brackets and locked in the position determined by the stop pin 54. After each strip 50 is positioned on the jig 51 in predetermined relationship with respect to its associated bracket 43, these strips and their brackets can then be mounted on the machines with very little adjustment, the only required adjustment being that necessary to effect a selective distance between the roll 17 and the strips 50. This selective distance can be attained by shifting the brackets 43 in the plane of the strips 50 along the slots 44 and locking these brackets in position by means of the bolts 45. It should be noted that the distance between the roll- 17 and the-strips 50 is determined in accordance with the desired amount of sheet jutting and the desired degree of intimacy of registry of the sheet 16 with the roll 17.

While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that various omissions, substitutions and changes in the forms and details of the device illustrated'and its operation may be made by those skilled in the art Without departing from the spirit of the invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A machine for making single faced corrugated paper, including a pair of intermeshing corrugating rolls, a liner applying roll adjacent to one of said corrugating rolls, guide strips for holding the corrugated sheet in registry with the middle roll from the line of intermeshing between said corrugating rolls to the line of tangency of the liner applying roll, a supporting bar closely adjacent to the first corrugating roll, and having the surface disposed in a plane substantially radial in respect to the axis of the middle roll and facing away from the first corrugating roll and carrying said guide strips, and brackets detachably secured in abutting relationship to said surface, whereby upon releasing the brackets from said bar the guide strips may be moved directly away from the middle roll.

2. A machine for making single faced corrugated paper, including a series of three rolls including a pair of corrugating rolls and a liner applying roll, a bar adjacent to the first corruga'ting roll, a plurality of guide strips adjacent to the periphery of the middle roll. and brackets for supporting said guide strips from said bar, said brackets being slotted at one end to receive their guide strips and slotted at the opposite end in a direction at right angles to the first mentioned slot to permit endwise adjustment in respect to said bar.

3. A machine for making single faced corrugated paper, including a series of three rolls including a pair of corrugating rolls and a liner applying roll, a bar adjacent to the first corrugating roll, a plurality of guide strips adjacent to the periphery of the middle roll, brackets secured to said guide strips and slotted at the opposite end in a plane at right angles to the plane of the guide strips to permit endwise adjustment of the brackets in respect to said bar, and means for securing said brackets to said bar and permitting said endwise adjustment as Well as movement away from the bar upon removal of said securing means.

Signed at Camden in the county of Camden and State of NeWJersey this 19th day of ihigust A. D. 1930.

, KARL SIEG. 

